In the event you manage to get one of your lowly pawns all the way across the board in a game of chess, you have to promote it to another piece so it can continue to battle. Most commonly chosen is the queen on account of her maneuverability. And this

Constructed by HackADay user mircemk using as many 3D printed parts as possible, this self-balancing cube uses an Arduino Nano microcontroller and MPU6050 gyroscope / accelerometer to control 3 motor-driven reaction wheels to keep itself balanced — even standing on one corner on a slope! Me? I can’t stand on

This is a video of a 3D printing technology that involves using a needle to extrude silicone objects directly into a water-based gel, so there’s no need for additional support while printing. In the video, a silicone handbag is printed by design house coperni for a show at Disneyland Paris.

3DBenchy is a computer model of a small boat designed specifically for benchmark testing the accuracy and capabilities of 3D printers. And Youtuber Emily The Engineer decided to try 3D printing one large enough for a person to sit in, and, ideally, function as an actual boat. The final result

The brainchild of maker of things Ivan Miranda, this is a giant 3D printed marble clock that tells time using black and white marbles as a dot matrix display. The clock features a marble elevator, at the top of which it uses an array of infrared sensors to determine black

This is a very worthwhile video of Australian TikToker Dazza’s quest to 3D print the perfect home for a green tree frog that was living in a fence pole on his property. He starts with a basic home model that fits on top of the pole, before replacing it with

Available as a 3D printable file from JBV Creative, this sine wave machine features marbles that roll in a sine wave as the machine is cranked. Hate cranking? Get creative and add a motor. Or a car engine! JBV also sells the file for a wave machine that’s only 8

This is a video of engineer and tinkerer JBV Creative constructing ‘The Corporate Machine’, a piece of kinetic wall art for his apartment that represents the tireless churning of big business. Using 99% 3D-printed parts, the machine launches ping-pong balls and catches them, repeating the process indefinitely until a power